Title :
A current mode CMOS IC for biological signals measurement in noisy environment
Author :
Ayachi, Mohsen ; Zhou, Lingchuan ; Blonde, J.-P.
Author_Institution :
CNRS, InESS-ULP, Strasbourg, France
Abstract :
This paper describes a novel fully integrated circuit implemented in standard 0.35 ¿m CMOS technology dedicated to biological signal measurement such as ECG or EEG signals. Based on a new CMOS current conveyor (a low power 60 ¿A @ ±1.5 V power supply, 88 × 100 ¿m2 area, 100 MHz bandwidth and 10 GHz equivalent GBW circuit) the instrumentation amplifier used in this IC has a weaker offset and a better CMRR than its equivalent in Voltage mode. In order to totally cancel output offset Voltage and reduce noise, the input signal and output signal of the instrumentation amplifier are chopped at high frequency. The size and the architecture of this IC make biological signal measurement in very hostile environment such MRI, possible.
Keywords :
CMOS analogue integrated circuits; electrocardiography; electroencephalography; instrumentation amplifiers; CMOS integrated circuit; ECG signals; EEG signals; biological signals measurement; electrocardiography; electroencephalography; instrumentation amplifier; noisy environment; CMOS integrated circuits; CMOS technology; Current measurement; Instruments; Integrated circuit measurements; Integrated circuit noise; Integrated circuit technology; Measurement standards; Voltage; Working environment noise; CMOS; Chopper stabilized amplifier; Current conveyor; Instrumentation amplifier;
Conference_Titel :
Microelectronics, 2008. ICM 2008. International Conference on
Conference_Location :
Sharjah
Print_ISBN :
978-1-4244-2369-9
Electronic_ISBN :
978-1-4244-2370-5
DOI :
10.1109/ICM.2008.5393529
